Subprocess error in python

Question

from subprocess import Popen,PIPE
from Tkinter import *
root=Tk()
calc=Frame(root)
calc.grid()
root.title("Calculator")
bt=Button(calc,text="3")
bt.grid()
process=subprocess.Popen(['python','imacap.py'],stderr=subprocess.STDOUT,  stdout=subprocess.PIPE)

In given code I created GUI using tkinter in python. While displaying GUI app, I want to run camera capturing app at the same time so after googling it I found solution of using subprocess.Popen. So I created imacap.py and used in it. But now I am facing error as Traceback (most recent call last):

File "/home/mukund/testa.py", line 9, in process=subprocess.Popen(['python','imacap.py'], stderr=subprocess.STDOUT, stdout=subprocess.PIPE) NameError: name 'subprocess' is not defined

You have imported Popen not subprocess. Please use import subprocess — lima

Nilesh Nilesh · Accepted Answer · 2014-02-27T09:22:56

You are importing Popen and PIPE from subprocess. Now you can access Popen or PIPE directly, no need of subprocess as prefix.

If you want to use subprocess as prefix then change your import.

import subprocess

Then subprocess.Popen will work.

Subprocess error in python

2 Answers